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Ch 34
Neurosurgery
| Question | Answer |
|---|---|
| Transmits information to Neurons, Muscles & Glandular tissues? | Neuron |
| Acts as the sending & receiving area for nerve impulses & is the energy center for the cell | Soma |
| Carries Nerve impulses away [Efferent connection] from the cell | Axon |
| Carries nerve impulses toward [Afferent connection] the cell | Dendrites |
| Bone that provides structure for the forehead & its orbits | Frontal Bone |
| 2 Bones on either side of the skull. Provide structure for the sides & roof of the cranium | Parietal Bones |
| 2 Bones on either side of the skull. Contribute to the structure for the sides of the cranium | Temporal Bones |
| Bone that provides structure to the back of the skull & a portion of the floor of the cranium. Where the visual cortex of the brain is located. | Occipital |
| Thin membrane that connect the skulls bony plates | Suture |
| Coronal, Sagittal, Lambdoid & Squamous are what? | Four main sutures that connect the plate of the skull |
| The outermost layer of meninges & is composed of very dense, fibrous tissue. | Dura Mater |
| Middle layer of meninges made up of very delicate serous membrane that has the appearance of a spider web | Arachnoid Mater |
| The innermost layer that is closest to the brain. Has a vascular membrane containing areolar connective tissue. | Pia Mater |
| Space filled with cerebrospinal fluid that circulates over all parts of the central nervous system | Subarachnoid space |
| The outermost layer of the brain composed of nerve cells and blood vessels | Gray Matter (Cerebral Cortex) |
| Controls higher-level functions like memory, thinking, and problem-solving | Cerebral Cortex |
| The largest portion of the human brain and is also known as the forebrain. Accounts for 88% of the total weight of the organ | Cerebrum |
| Ridges "Convolutions" that cover the surface of the Cerebrum | Gyrus |
| Shallow grooves/depressions on the surface of the Cerebrum | Sulcus |
| Deep grooves that divide the cerebrum into lobes | Fissures |
| 3 main sections of the brain | Cerebrum, Cerebellum, & Brain Stem |
| Lobes of the cerebrum | Frontal, Parietal, Occipital, and Temporal lobes |
| Dendrites, Axon & the Cell body | Components of a Neuron |
| 2nd largest structure of the brain | Cerebellum |
| Part of the brain that is posterior to the medulla oblongata & inferior to the Cerebrum's occipital lobe | Cerebellum |
| Lowest part of the brain stem & continuous with the spinal cord | Medulla Oblongata |
| Distal most area of the spinal cord of spinal nerves | Filum Terminale |
| Network of arteries that give rise to to the other arteries that supply blood to the cerebral hemisphere | Circle of Willis |
| Branch from the Common Carotid artery, provides brain with most of its blood | Internal Carotid Artery |
| Branch from the Common Carotid that divides into the Anterior Cerebral Artery & Posterior & middle Cerebral Artery | Internal Carotid Artery |
| Artery which supplies blood to to the cerebrum medial surface & middle cerebral artery | Anterior Cerebral Artery (ACA) |
| Network of arteries that ensures continuity of blood supply to the brain if any of the arteries are compromised. | Circle of Willis |
| Branch of Internal Carotid which supplies blood to the lateral surface of the Cerebrum | Middle Cerebral artery (MCA) |
| Arteries that unite and form the single basilar artery that divides to form the posterior cerebral arteries | Vertebral Arteries |
| Arteries that serve the Occipital and Temporal Regions of the Cerebrum | Posterior Cerebral Arteries |
| Provides structure & protects the Spinal Cord | Vertebral Column |
| Cartilaginous cushions that separate the vertebrae | Intervertebral Disks |
| Tough outer layer of outer layer of of vertebral disks | Annulus Fibrosus |
| Soft gelatinous core of the vertebral disks | Nucleus Pulposus |
| connect the left and right hemispheres of the brain & allows for communication between hemispheres | Corpus Callosum |
| # of Cervical Vertebrae | 7 |
| # of bones that make up the Vertebral column | 33 |
| 1st cervical vertibrae | Atlas |
| 2nd cervical vertebrae responsible for flexion & extension of the head | Axis |
| # of Thoracic Vertebrae | 12 |
| # of Lumbar Vertebrae | 5 |
| # of Sacral Vertebrae | 5 (considered part of the pelvic girdle) |
| The spinal cord begins at | Foramen Magnum |
| Spinal cord ends at | Cauda Equina |
| Nerves that look like horses tail | Cauda Equina |
| What is the function of the Dura Arachnoid & Pia Mater | Conduct impulses & serve as a spinal reflex center |
| # of cranial bones | 12 |
| CN III | Oculomotor |
| CN IV | Trochlear |
| CN V | Trigminal |
| CN VI | Abducens |
| Cranial Nerve that Innervates a muscle which moves the eye | CN VI Abducens |
| Cranial Nerve that is responsible for sensory innervation of the face and motor innervation to muscles of mastication, Tympanic Membrane | CN V Trigeminal |
| Cranial Nerve that controls an extraocular muscle | CN IV Trochlear |
| Cranial Nerve that is responsible for motor innervation of the upper eyelid muscle, extraocular muscle and pupillary muscle | CN III Oculomotor |
| Two Nervous Systems of the body | Central Nervous System (CNS) & Peripheral Nervous System (PNS) |
| Nervous system that which is the brain & spinal cord | Central Nervous System (CNS) |
| Nervous System comprised of Nerves that Communicates to the CNS | Peripheral Nervous System (PNS) |
| 2 divisions of the Peripheral Nervous System | Autonomic & Somatic |
| Involuntary division of the Peripheral Nervous System | Autonomic |
| Division of Peripheral Nervous System that controls voluntary muscle movement | Somatic |
| 2 nervous systems that that the Autonomic nervous system is responsible for | Sympathetic and Parasympathetic |
| Nervous System in charge of Fight or Flight | Sympathetic Nervous System |
| Nervous system responsible for resting functions | Parasympathetic Nervous System |
| Pre operative brain mapping | Functional MRI |
| MRI technology with a head frame and magnetic markers called fiducials to pinpoint a particular location in the brain& provide precise coordinates for surgery | Stereotactic MRI |
| Technology that provides images of vascular structures. Useful for visualizing the cerebral circulation | Magnetic Resonance Angiography (MRA) |
| Arterial catheter used to inject a contrast medium in patients arterial system. helps diagnosis of Cerebral aneurysms & arteriovenous malformations | Angiography |
| Used with bits and attachments for making burr holes | Hudson Brace |
| Horseshoe or pin fixation device for neurosurgical cranial positioning | Mayfield |
| Instrument used for scalp hemostasis and resembles a Crile or Kelly hemostat except the curve is to the side | Dandy |
| Instrument used to extract pieces of the nucleus pulposus in a discectomy | Pituitary Rongeurs |
| A system used in a spinal case that precisely delivers an instrument to a target at any point within a defined space | Stereotaxis |
| Monitoring used intraoperatively. Continuous evaluation of a patient's nervous system | Neurophysiological |
| Emits a variable ultrasonic energy field that emulsifies abnormal tissue while preserving normal neural tissue | Ultrasonic Aspirator (CUSA) |
| Intracarotid amobarbital procedure, is a diagnostic test that maps language and memory function in the brain's hemispheres | WADA test |
| Surgical position that allows position used for exposure of the unilateral temporal, occipital lobe, brain stem, or cerebellum. | Lateral or Semi Lateral |
| Position allows bilateral access to occipital, brain stem or cerebellum. Requires the use of 3-pin skull fixation device attached to a frame | Sitting |
| Surgical position; bilateral access to occipital, cerebellum, or brain stem. Chest rolls, pillow or Mayfield horseshoe headrest | Prone |
| Thrombin Gelfoam, Gelfoam powder, and surgicel are cut to the same size as what | Cottonoids |
| Gelfoam, Thrombin, Surgicel, and bone wax are what | Hemostatic agents |
| Diuretic used to remove fluid from tissue and prevents swelling resulting from a trauma | Mannitol |
| Octyl cyanoacrylate is also known as | Dermabond |
| Used to close the edges of the skin that are not umder pressure | Mastisol |
| Procedure to repair defects in the skull | cranioplasty |
| The facial sinus used for surgical approach to a pituitary adenoma rather than traditional craniotomy | Sphenoid bone |
| Cerebral Edema or Infection is a concern after what procedure | Craniotomy |
| Master Gland the size of a grape | Pituitary Gland |
| The removal of all or a portion of the pituitary gland. May utilize a Caldwell-Luc procedure to access the sell turcica | Transsphenoidal Hypophysectomy |
| Weak spots in the walls of arteries that over time will balloon out from the arterior wall | aneurysms |
| Patients with cerebral aneurysm generally are | asymptomatic |
| Aneurysms are typically found at points of | bifurcation |
| Once an aneurysm clip has been opened, it cannot be | closed and used again |
| Premature closure of the cranial sutures of an infant is called | Craniosynostosis |
| Cranial sutures should stay open until what age | 2 years |
| Surgery for craniosynostosis is usually done between what ages | 6 weeks & 6 months |
| Ventricular Peritoneal (VP) & Ventricular Arterial (VA) shunt is used to divert | Cerebrospinal Fluid |
| Shunts are used to divert cerebrospinal fluid to prevent | Intracranial pressure |
| The distal shunt may be placed in what cavity | peritonal |
| Stimulators that send electrical impulses to the nerves or spinal cord | Deep Brain Simulators |
| Pump therapy that is used within the subarachnoid space to reduce pain by delivering medication directly to the source of pain. | Intrathecal Pump |
| Removal of one or more cervical intervertebral discs followed by spinal fusion to restore continuity of the spine. | Anterior Cervical Discectomy and Fusion |
| The narrowing of the spinal cord in the neck is | Cervical Stenosis |
| Autologous bone graft is usually procured from the | Iliac Crest |
| Foraminotomy is a | Opening or Passage |
| Condition of the hand in which the median nerve is compressed by transverse carpal ligament | Carpel Tunnel Syndrome |
| Procedure in which the goal is to free the ulnar nerve from the medial epicondyle groove. | Ulnar Nerve Transposition |